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Nonlinear self-excited oscillations of a ducted flame
Self-excited oscillations of a confined flame, burning in the wake of a bluff-body flame-holder, are considered. These oscillations occur due to interaction between unsteady combustion and acousticExpand
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Acoustic Analysis of Gas Turbine Combustors
Combustion instability has become a major issue for gas turbine manufacturers. Stricter emission regulations, particularly on nitrogen oxides, have led to the development of new combustion methods,Expand
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Thermoacoustic oscillations occur in a wide variety of practical applications in which heat is supplied to an acoustic resonator. A simple geometry is investigated systematically to determine theExpand
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Experimental investigation of the nonlinear response of turbulent premixed flames to imposed inlet velocity oscillations
This paper describes an experimental investigation of acoustically forced lean premixed turbulent bluff-body-stabilised flames in an enclosure short enough so that no coupling of the combustorExpand
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A kinematic model of a ducted flame
A premixed ducted flame, burning in the wake of a bluff-body flame-holder, is considered. For such a flame, interaction between acoustic waves and unsteady combustion can lead to self-excitedExpand
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The absorption of sound by perforated linings
The efficiency of a perforated screen as a sound absorber can be greatly increased when a rigid surface is placed behind the screen, essentially because the sound can then interact many times withExpand
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The absorption of axial acoustic waves by a perforated liner with bias flow
The effectiveness of a cylindrical perforated liner with mean bias flow in its absorption of planar acoustic waves in a duct is investigated. The liner converts acoustic energy into flow energyExpand
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▪ Abstract Early work and recent advances in feedback control of combustion oscillations are described. The physics of combustion oscillations, most commonly caused by a coupling between acousticExpand
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Modern Methods in Analytical Acoustics: Lecture Notes
I. The Classical Techniques of Wave Analysis.- 1 Complex Variable Theory.- 2 Generalized Functions.- 3 Fourier Transforms, Random Processes, Digital Sampling and Wavelets.- 4 Asymptotic Evaluation ofExpand
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